/* 會員頁、工具頁共用樣式（首頁的樣式仍在 index.html 內） */
:root {
  --bg: #131b23;
  --bg-panel: #19221f;
  --ink-1: #e3d7bf;
  --ink-2: #c9b999;
  --ink-3: rgba(201, 185, 153, 0.66);
  --accent: #c2a068;
  --gold-light: #d2b273;
  --line: rgba(168, 129, 72, 0.24);
  --danger: #d98a7a;
  --ok: #9fc49a;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --cn: "Cactus Classical Serif";
  --en: "Cinzel";
  color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
html { font-synthesis: none; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100svh;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(44, 62, 45, 0.35), transparent 70%), var(--bg);
  color: var(--ink-2);
  font-family: var(--cn), "Noto Serif TC", serif;
  font-size: 16px; line-height: 1.9; letter-spacing: 0.04em;
  overflow-x: clip;
}
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }
h1, h2, p { margin: 0; }
p { text-wrap: pretty; }
:focus-visible { outline: 2px solid var(--gold-light); outline-offset: 3px; }
.en { font-family: var(--en), var(--cn), serif; letter-spacing: 0.12em; }

/* ───────── 頂部細列 ───────── */
.bar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 16px;
  height: 60px; padding: 0 16px;
  background: rgba(17, 24, 31, 0.9);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.bar__brand { display: grid; line-height: 1.1; }
.bar__brand b { font-weight: 400; font-size: 19px; letter-spacing: 0.2em; color: var(--gold-light); }
.bar__brand small { font-size: 9px; letter-spacing: 0.28em; color: var(--ink-3); }
.bar__right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.bar__link { padding: 6px 12px; border: 1px solid var(--line); font-size: 14px; letter-spacing: 0.12em; color: var(--ink-2); transition: border-color 0.3s ease, color 0.3s ease; white-space: nowrap; }
button.bar__link { background: none; font: inherit; cursor: pointer; }
.bar__link:hover { color: var(--ink-1); border-color: rgba(168, 129, 72, 0.55); }
.bar__link[aria-current="page"] { color: var(--gold-light); border-color: rgba(168, 129, 72, 0.7); background: rgba(168, 129, 72, 0.12); }
.back { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; letter-spacing: 0.14em; color: var(--ink-3); transition: color 0.3s ease; }
.back:hover { color: var(--ink-1); }

/* ───────── 版面 ───────── */
.page { width: 100%; max-width: 560px; margin: 0 auto; padding: 48px 16px 96px; }
.page__kicker { font-size: 12px; letter-spacing: 0.3em; text-transform: uppercase; color: var(--accent); }
.page__title { margin-top: 10px; font-size: clamp(30px, 6vw, 40px); font-weight: 400; letter-spacing: 0.12em; color: var(--ink-1); }
.page__lead { margin-top: 12px; color: var(--ink-3); }
.panel { margin-top: 32px; padding: clamp(22px, 5vw, 36px); border: 1px solid var(--line); background: rgba(25, 34, 31, 0.8); }

/* ───────── 分頁（登入／註冊） ───────── */
.tabs { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--line); margin-bottom: 26px; }
.tabs button {
  appearance: none; border: 0; background: none; cursor: pointer;
  padding: 12px 0; font: inherit; letter-spacing: 0.2em; color: var(--ink-3);
  border-bottom: 1px solid transparent; margin-bottom: -1px;
  transition: color 0.3s ease, border-color 0.3s ease;
}
.tabs button[aria-selected="true"] { color: var(--gold-light); border-bottom-color: var(--gold-light); }

/* ───────── 表單 ───────── */
.form { display: grid; gap: 20px; }
.field { display: grid; gap: 8px; }
.field > label, .field > .label { font-size: 14px; letter-spacing: 0.12em; color: var(--ink-2); }
.hint { font-size: 13px; color: var(--ink-3); }
.row { display: grid; gap: 12px; grid-template-columns: 1.3fr 1fr 1fr; }
.input, .select {
  width: 100%; min-height: 48px; padding: 10px 14px;
  border: 1px solid rgba(168, 129, 72, 0.32); border-radius: 0;
  background: rgba(10, 14, 18, 0.55); color: var(--ink-1);
  font: inherit; letter-spacing: 0.04em;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}
.input:hover, .select:hover { border-color: rgba(168, 129, 72, 0.55); }
.input:focus, .select:focus { outline: none; border-color: var(--gold-light); background: rgba(10, 14, 18, 0.75); }
.input[aria-invalid="true"], .select[aria-invalid="true"] { border-color: var(--danger); }
.error { font-size: 13px; color: var(--danger); }
.error:empty { display: none; }
.seg { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid rgba(168, 129, 72, 0.32); }
.seg button {
  appearance: none; border: 0; cursor: pointer; min-height: 46px;
  background: transparent; color: var(--ink-2); font: inherit; letter-spacing: 0.16em;
  transition: background-color 0.25s ease, color 0.25s ease;
}
.seg button + button { border-left: 1px solid rgba(168, 129, 72, 0.32); }
.seg button[aria-pressed="true"] { background: rgba(168, 129, 72, 0.2); color: var(--gold-light); }
.check { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--ink-2); cursor: pointer; }
.check input { margin-top: 5px; width: 18px; height: 18px; accent-color: var(--accent); flex: none; }
.check a { color: var(--gold-light); text-decoration: underline; text-underline-offset: 3px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 50px; padding: 12px 26px;
  border: 1px solid rgba(168, 129, 72, 0.7); background: rgba(168, 129, 72, 0.14);
  color: var(--gold-light); font: inherit; letter-spacing: 0.2em; cursor: pointer;
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.btn:hover { background: rgba(168, 129, 72, 0.24); border-color: var(--gold-light); }
.btn[disabled] { opacity: 0.55; cursor: progress; }
.btn--ghost { background: transparent; border-color: var(--line); color: var(--ink-2); }
.btn--ghost:hover { background: rgba(168, 129, 72, 0.08); }
.btn--danger { background: transparent; border-color: rgba(217, 138, 122, 0.45); color: var(--danger); }
.btn--danger:hover { background: rgba(217, 138, 122, 0.08); border-color: var(--danger); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.actions--split { justify-content: space-between; }
.textlink { background: none; border: 0; padding: 0; font: inherit; font-size: 14px; color: var(--ink-3); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.textlink:hover { color: var(--ink-1); }

/* ───────── 提示訊息 ───────── */
.notice { padding: 12px 16px; border-left: 2px solid var(--accent); background: rgba(168, 129, 72, 0.08); font-size: 14px; color: var(--ink-1); }
.notice[hidden] { display: none; }
.notice--error { border-left-color: var(--danger); background: rgba(217, 138, 122, 0.08); }
.notice--ok { border-left-color: var(--ok); background: rgba(159, 196, 154, 0.08); }
.mock-banner { padding: 10px 16px; font-size: 13px; text-align: center; color: #1a1408; background: #c9a063; }
.mock-banner[hidden] { display: none; }

.divider { height: 1px; margin: 8px 0; background: var(--line); }
.privacy { font-size: 13px; color: var(--ink-3); }

@media (max-width: 480px) {
  .row { grid-template-columns: 1fr 1fr; }
  .row .field:first-child { grid-column: 1 / -1; }
  .bar__brand small { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}